ICP Transformer for WPG3364090LKC1 — 208/230V to 24V 40VA | Ships Today

Overview

This OEM control transformer steps down line voltage of 208/230V to the 24V low-voltage power that runs your furnace's control board, ignition module, contactor coil, and thermostat circuit. Rated at 40VA, it supplies the amperage needed to energize all 24V loads in the ICP Tempstar/Heil WPG3364090LKC1 packaged gas unit. When a transformer fails — usually from a low-voltage short, surge, or simple age — the entire control circuit goes dead: no ignition, no blower, and an unresponsive thermostat. Replacement kit includes the 24V barrier/terminal connector (part 1178431) for a clean, code-correct wiring termination.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP Tempstar Heil WPG3364090LKC1 packaged gas/electric unit. Also fits many ICP-family units (Comfortmaker, Heil, Tempstar) using a 208/230V-to-24V 40VA control transformer — verify VA rating and mounting before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
2. Access — Remove the control-panel service panel.
3. Document — Photograph all primary and secondary wire connections before disconnecting.
4. Remove — Disconnect the line-voltage primary and 24V secondary leads, then unbolt the failed transformer from the panel.
5. Install — Mount the new transformer, land the 208/230V primary and 24V secondary per your photo, and use the included 24V barrier connector.
6. Test — Restore power and confirm 24V across the secondary and normal ignition/blower operation.

Signs You Need a Replacement

• No 24V at the control board or thermostat (system completely dead)
• Repeated blown low-voltage fuse
• Buzzing, overheating, or a burnt smell from the transformer
• Measured 0V on the secondary with 208/230V present on the primary

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.